Temperature adjusting and controlling method for minitype experiment period and special apparatus therefor

Abstract

The invention relates to a device suitable for temperature regulation and temperature control in a micro-experimental section; the device includes a metal body with a flow channel for the experimental section opened on it, a semiconductor refrigerator installed on the metal body, and a radiator installed on the semiconductor refrigerator On the outside of the metal body, except for the installation of the semiconductor refrigeration device, it is covered with a thermal insulation layer of thermal insulation material; the temperature sensor is fixed in the hole opened on the metal body, and it is electrically connected with the temperature control instrument; the radiator is controlled by temperature. The circuit is electrically connected with the DC power supply and the temperature control instrument respectively. When the temperature of the metal body is higher or lower than the temperature set by the temperature control instrument, the temperature control circuit controls the conversion of the polarity of the power supply, so that the temperature of the metal body is controlled within the allowed fluctuation range of the set temperature. The device utilizes the characteristics of the semi-conductor refrigeration device which can not only cool, but also heat after the power supply is reversed, so as to provide the required temperature environment for the experiment section.

Description

technical field [0001] The invention relates to a method and a special device for temperature regulation and control, in particular to a device suitable for temperature regulation and temperature control in a micro-experiment section used in a laboratory. Background technique [0002] In the micro-liquid flow experiment, the ambient temperature directly affects the flow characteristics of the liquid in the micro-channel (the experiment generally uses a micron-diameter capillary). In order to adjust and stabilize the ambient temperature of the experimental section, it is usually achieved by controlling the temperature in the laboratory room (using an air conditioner) or using a method and equipment for a local temperature control box, and such temperature control devices are available on the market. But this kind of temperature adjustment device not only makes the temperature adjustment process take a long time, it is extremely unsuitable for the requirements of scientific ex...

AI Technical Summary

Problems solved by technology

But this kind of temperature adjustment device not only makes the temperature adjustment process take a long time, it is extremely unsuitable for the requirements of scientific experiments; and the temperature control accuracy of this method is low, and it cannot meet the requirements of scientific experiments; Large and small temperature adjustment range, it is difficult to create the harsh requirements put forward in scientific experiments, such as a low temperature environment close to 0 °C

In particular, it can be used in experiments such as trace liquid flow experiments, liquid viscosity determination or high-pressure liquid chromatography analysis, and there is no report on the miniature constant temperature device that can directly provide a stable and adjustable temperature environment for the experimental section.

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